CaratHunter
Plans
Radiant|Lab Grown|IGI

1.51ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG12417712

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

Certificate IGI LG12417712

Diamond specifications and retailer prices

From $355 NZD
As of November 6, 2026
Save $2,910 NZD (89%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,265 NZD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG12417712 or 12417712. Listed at 9 retailers as of November 2, 2026, with prices from $355 to $3,265, a $2,910 spread on the same certified stone. Do Amore Diamonds lists it at $3,265. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle31.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12417712
Dimensions7.26 × 5.78 × 4.05 mm
L/W Ratio1.26
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by High Pressure High Tempertature (HPHT) growth process.
Top View
7.26 mm5.78 mm1.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12417712
Side View
Table 63.5%Crown 42.6°Girdle: STK-THKPavilion 31.8°Culet: NoneDepth 70.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,265 NZD|Low: $327 NZD|High: $3,265 NZD|Avg: $1,516 NZD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3$355 NZD
Retailer 7$411 NZD
Retailer 6$765 NZD
Retailer 5$1,420 NZD
Retailer 2$1,517 NZD
Retailer 4$1,562 NZD
Retailer 8$1,876 NZD
Retailer 9$2,201 NZD
Do Amore Diamonds$3,265 NZD

18 data points across 9 retailers

9 retailers$355 NZD to $3,265 NZD

A
Cheapest Retailer
-
$355 NZD
A
Retailer 2
-
$411 NZD
View
B+
Retailer 3
-
$765 NZD
View
B
Retailer 4
-
$1,420 NZD
View
B
Retailer 5
-
$1,517 NZD
View
B
Retailer 6
-
$1,562 NZD
View
Retailer 7
-
$1,876 NZD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$2,201 NZD
View
Most Expensive
B
Do Amore Diamonds
27-F96B3FBEF · Nov 2
$3,265 NZD
$1,810 USD
View
8 more retailers have this diamond
Prices start from $355 NZDSave up to $2,910 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
$355 NZD