Radiant|Lab Grown|IGI

1.51ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG687560325

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

Certificate IGI LG687560325

Diamond specifications and retailer prices

From $211 USD
As of October 30, 2026
Save $1,339 USD (86%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $1,550 USD at Brilliant Earth · As of October 31, 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 top-tier cut grade and certified by IGI LG687560325 or 687560325. Listed at 25 retailers as of October 30, 2026, with prices from $211 to $1,550, a $1,339 spread on the same certified stone. Brilliant Earth lists it at $1,550. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.7°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687560325
Dimensions6.79 × 6.15 × 4.18 mm
L/W Ratio1.10
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
6.79 mm6.15 mm1.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687560325
Side View
Table 71.0%Crown 44.7°Girdle: MediumPavilion 35.6°Culet: NoneDepth 68.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,550 USD|Low: $202 USD|High: $1,760 USD|Avg: $642 USD|-11.9%
Brilliant Earth
Retailer 2
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Retailer 5
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Retailer 7
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Retailer 11
Retailer 12
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Retailer 19
October 31, 2026
Retailer 3$211 USD
Retailer 12$235 USD
Retailer 8$244 USD
Retailer 5$261 USD
Retailer 9$261 USD
Retailer 13$370 USD
Retailer 2$423 USD
Retailer 17$448 USD
Retailer 14$482 USD
Retailer 10$516 USD
Retailer 18$610 USD
Retailer 7$839 USD
Retailer 19$842 USD
Retailer 6$886 USD
Retailer 16$944 USD
Retailer 11$1,021 USD
Retailer 15$1,052 USD
Retailer 4$1,080 USD
Brilliant Earth$1,550 USD

44 data points across 19 retailers

25 retailers$211 USD to $1,550 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
A
Retailer 8
-
$423 USD
€403 EUR
View
A
Retailer 9
-
$448 USD
ZAR 7,243 ZAR
View
A
Retailer 10
-
$482 USD
£380 GBP
View
A
Retailer 11
-
$515 USD
View
A
Retailer 12
-
$516 USD
View
A
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
-
$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
-
$1,052 USD
£828 GBP
View
B
Retailer 22
-
$1,063 USD
View
Retailer 23
-
$1,080 USD
View
Price last confirmed 17 days ago
B
Retailer 24
-
$1,227 USD
View
Most Expensive
B
Brilliant Earth
17804972A · Oct 31
$1,550 USD
View
24 more retailers have this diamond
Prices start from $211 USDSave up to $1,339 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