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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 $374 NZD
As of November 4, 2026
Save $2,163 NZD (85%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $2,537 NZD 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 $374 to $2,537, a $2,163 spread on the same certified stone. Brilliant Earth lists it at $2,537. 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: $2,537 NZD|Low: $358 NZD|High: $3,193 NZD|Avg: $1,130 NZD|-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$374 NZD
Retailer 15$417 NZD
Retailer 8$433 NZD
Retailer 5$463 NZD
Retailer 9$463 NZD
Retailer 16$656 NZD
Retailer 14$750 NZD
Retailer 13$798 NZD
Retailer 2$846 NZD
Retailer 10$915 NZD
Retailer 12$1,079 NZD
Retailer 7$1,488 NZD
Retailer 3$1,494 NZD
Retailer 6$1,572 NZD
Retailer 17$1,673 NZD
Retailer 11$1,849 NZD
Retailer 18$1,907 NZD
Brilliant Earth$2,537 NZD

45 data points across 18 retailers

25 retailers$374 NZD to $2,537 NZD

A
Cheapest Retailer
-
$374 NZD
A
Retailer 2
-
$417 NZD
View
Final sale: no returns
A
Retailer 3
-
$433 NZD
View
Retailer 4
-
$463 NZD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$463 NZD
View
A
Retailer 6
-
$522 NZD
View
B+
Retailer 7
-
$656 NZD
View
A
Retailer 8
-
$750 NZD
View
A
Retailer 9
-
$798 NZD
View
A
Retailer 10
-
$846 NZD
View
A
Retailer 11
-
$914 NZD
View
A
Retailer 12
-
$915 NZD
View
B+
Retailer 13
-
$1,079 NZD
View
B+
Retailer 14
-
$1,488 NZD
View
B+
Retailer 15
-
$1,494 NZD
View
B+
Retailer 16
-
$1,504 NZD
View
B+
Retailer 17
-
$1,572 NZD
View
B
Retailer 18
-
$1,582 NZD
View
Retailer 19
-
$1,673 NZD
View
Price last confirmed 7 days ago
B
Retailer 20
-
$1,811 NZD
View
B
Retailer 21
-
$1,849 NZD
View
B
Retailer 22
-
$1,886 NZD
View
Retailer 23
-
$1,907 NZD
View
Price last confirmed 18 days ago
B
Retailer 24
-
$2,177 NZD
View
Most Expensive
B
Brilliant Earth
17805137A · Nov 4
$2,537 NZD
$1,430 USD
View
24 more retailers have this diamond
Prices start from $374 NZDSave up to $2,163 NZD

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
$374 NZD