Radiant|Lab Grown|IGI

1.51ct D VS1 Radiant Lab Grown Diamond

VG • D/VS1 • IGI LG687560276

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG687560276

Diamond specifications and retailer prices

From $211 USD
As of October 30, 2026
Save $1,219 USD (85%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $1,430 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG687560276 or 687560276. Listed at 25 retailers as of October 30, 2026, with prices from $211 to $1,430, a $1,219 spread on the same certified stone. Brilliant Earth lists it at $1,430. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.5°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687560276
Dimensions6.81 × 6.11 × 4.23 mm
L/W Ratio1.11
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.81 mm6.11 mm1.51 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687560276
Side View
Table 68.0%Crown 41.5°Girdle: MediumPavilion 35.6°Culet: NoneDepth 69.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,430 USD|Low: $202 USD|High: $1,800 USD|Avg: $643 USD|-20.6%
Brilliant Earth
Retailer 2
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Retailer 5
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 4$211 USD
Retailer 2$235 USD
Retailer 8$244 USD
Retailer 5$261 USD
Retailer 9$261 USD
Retailer 12$370 USD
Retailer 19$422 USD
Retailer 15$448 USD
Retailer 13$482 USD
Retailer 10$516 USD
Retailer 16$610 USD
Retailer 7$839 USD
Retailer 3$842 USD
Retailer 6$886 USD
Retailer 14$944 USD
Retailer 11$1,021 USD
Retailer 17$1,048 USD
Retailer 18$1,075 USD
Brilliant Earth$1,430 USD

45 data points across 19 retailers

25 retailers$211 USD to $1,430 USD

A
Cheapest Retailer
-
$211 USD
A
Retailer 2
-
$235 USD
View
Final sale: no returns
A
Retailer 3
-
$244 USD
View
A
Retailer 4
-
$261 USD
View
A
Retailer 5
-
$261 USD
View
A
Retailer 6
-
$294 USD
HK$2,300 HKD
View
B+
Retailer 7
-
$370 USD
View
Retailer 8
-
$422 USD
€402 EUR
View
Price last confirmed 8 days ago
A
Retailer 9
-
$448 USD
ZAR 7,243 ZAR
View
A
Retailer 10
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$482 USD
£380 GBP
View
A
Retailer 11
-
$515 USD
View
A
Retailer 12
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$516 USD
View
B+
Retailer 13
-
$610 USD
A$938 AUD
View
B+
Retailer 14
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$839 USD
View
B+
Retailer 15
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$842 USD
View
B+
Retailer 16
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$849 USD
SGD 1,147 SGD
View
B+
Retailer 17
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$886 USD
View
B
Retailer 18
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$892 USD
View
B
Retailer 19
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$944 USD
A$1,452 AUD
View
B
Retailer 20
-
$1,021 USD
£804 GBP
View
B
Retailer 21
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$1,048 USD
£825 GBP
View
B
Retailer 22
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$1,063 USD
View
Retailer 23
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$1,075 USD
View
Price last confirmed 12 days ago
B
Retailer 24
-
$1,227 USD
View
Most Expensive
B
Brilliant Earth
17805137A · Oct 30
$1,430 USD
View
24 more retailers have this diamond
Prices start from $211 USDSave up to $1,219 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Radiant
$211 USD