CaratHunter
Plans
Radiant|Lab Grown|IGI

1.51ct D SI1 Radiant Lab Grown Diamond

EX • D/SI1 • IGI LG514284333

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

Certificate IGI LG514284333

Diamond specifications and retailer prices

From $781 USD
As of November 5, 2026
12 retailers carry this diamond
Most expensive: $1,710 USD at Do Amore Diamonds · As of October 28, 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 top-tier cut grade and certified by IGI LG514284333 or 514284333. Listed at 12 retailers as of November 5, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514284333
Dimensions8.08 × 5.65 × 3.86 mm
L/W Ratio1.43
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
8.08 mm5.65 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514284333
Side View
Table 67.0%Crown 42.9°Girdle: Slightly ThickPavilion 36.4°Culet: NoneDepth 68.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,710 USD|Low: $167 USD|High: $1,710 USD|Avg: $605 USD|+2.4%
Do Amore Diamonds
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
October 28, 2026
Retailer 2$178 USD
Retailer 5$194 USD
Retailer 13$202 USD
Retailer 14$292 USD
Retailer 4$344 USD
Retailer 6$386 USD
Retailer 11$389 USD
Retailer 7$491 USD
Retailer 12$733 USD
Retailer 3$766 USD
Retailer 8$823 USD
Retailer 10$1,115 USD
Retailer 9$1,470 USD
Do Amore Diamonds$1,710 USD

26 data points across 14 retailers

12 retailers

Retailer 1
-
$178 USD
Price last confirmed 11 days ago
Retailer 2
-
$202 USD
View
Price last confirmed 14 days ago
Retailer 3
-
$292 USD
View
Price last confirmed 13 days ago
Retailer 4
-
$344 USD
View
Price last confirmed 12 days ago
Retailer 5
-
$491 USD
View
Price last confirmed 11 days ago
Retailer 6
-
$733 USD
View
Price last confirmed 12 days ago
Retailer 7
-
$766 USD
View
Price last confirmed 13 days ago
B+
Retailer 8
-
$781 USD
View
Retailer 9
-
$1,115 USD
View
Price last confirmed 13 days ago
Retailer 10
-
$1,470 USD
View
Price last confirmed 10 days ago
Most Expensive
Do Amore Diamonds
27-BBC1EEF44 · Oct 28
$1,710 USD
View
Price last confirmed 9 days ago
10 more retailers have this diamond
Prices start from $781 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.

B+
1.51ct Radiant
$781 USD