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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 $301 AUD
As of November 4, 2026
Save $1,738 AUD (85%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $2,038 AUD at Brilliant Earth · As of November 4, 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 November 4, 2026, with prices from $301 to $2,038, a $1,738 spread on the same certified stone. Brilliant Earth lists it at $2,038. 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
Colour
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $2,038 AUD|Low: $288 AUD|High: $2,566 AUD|Avg: $908 AUD|-20.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 5, 2026
Retailer 4$301 AUD
Retailer 15$335 AUD
Retailer 8$348 AUD
Retailer 5$372 AUD
Retailer 9$372 AUD
Retailer 16$527 AUD
Retailer 14$603 AUD
Retailer 13$641 AUD
Retailer 2$680 AUD
Retailer 10$736 AUD
Retailer 12$867 AUD
Retailer 7$1,196 AUD
Retailer 3$1,200 AUD
Retailer 6$1,263 AUD
Retailer 17$1,344 AUD
Retailer 11$1,485 AUD
Retailer 18$1,532 AUD
Brilliant Earth$2,038 AUD

45 data points across 18 retailers

25 retailers$301 AUD to $2,038 AUD

A
Cheapest Retailer
-
$301 AUD
A
Retailer 2
-
$335 AUD
View
Final sale: no returns
A
Retailer 3
-
$348 AUD
View
Retailer 4
-
$372 AUD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$372 AUD
View
A
Retailer 6
-
$419 AUD
View
B+
Retailer 7
-
$527 AUD
View
A
Retailer 8
-
$603 AUD
View
A
Retailer 9
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$641 AUD
View
A
Retailer 10
-
$680 AUD
View
A
Retailer 11
-
$734 AUD
View
A
Retailer 12
-
$736 AUD
View
B+
Retailer 13
-
$867 AUD
View
B+
Retailer 14
-
$1,196 AUD
View
B+
Retailer 15
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$1,200 AUD
View
B+
Retailer 16
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$1,209 AUD
View
B+
Retailer 17
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$1,263 AUD
View
B
Retailer 18
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$1,272 AUD
View
Retailer 19
-
$1,344 AUD
View
Price last confirmed 7 days ago
B
Retailer 20
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$1,455 AUD
View
B
Retailer 21
-
$1,485 AUD
View
B
Retailer 22
-
$1,515 AUD
View
Retailer 23
-
$1,532 AUD
View
Price last confirmed 18 days ago
B
Retailer 24
-
$1,749 AUD
View
Most Expensive
B
Brilliant Earth
17805137A · Nov 4
$2,038 AUD
$1,430 USD
View
24 more retailers have this diamond
Prices start from $301 AUDSave up to $1,738 AUD

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
$301 AUD