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Radiant|Lab Grown|IGI

1.55ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG514271363

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

Certificate IGI LG514271363

Diamond specifications and retailer prices

From $985 NZD
$555 USD
As of November 1, 2026
Save $3,576 NZD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,561 NZD at MOH London · As of October 26, 2026
View at MOH London

About this 1.55ct lab-grown radiant diamond

This 1.55ct 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 standard cut grade and certified by IGI LG514271363 or 514271363. Listed at 14 retailers as of October 26, 2026, with prices from $985 to $4,561, a $3,576 spread on the same certified stone. MOH London lists it at $4,561. 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

1.55
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.2°
Pavilion angle30.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514271363
Dimensions7.49 × 5.78 × 3.93 mm
L/W Ratio1.30
Girdle conditionFaceted
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
7.49 mm5.78 mm1.55 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514271363
Side View
Table 65.5%Crown 42.2°Girdle: MediumPavilion 30.2°Culet: NoneDepth 68.0%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $4,561 NZD|Low: $704 NZD|High: $4,610 NZD|Avg: $1,829 NZD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 10$880 NZD
Retailer 3$985 NZD
Retailer 4$985 NZD
Retailer 11$1,091 NZD
Retailer 5$1,095 NZD
Retailer 9$1,340 NZD
Retailer 6$1,589 NZD
Retailer 13$1,698 NZD
Retailer 2$1,800 NZD
Retailer 7$2,094 NZD
Retailer 12$2,869 NZD
Retailer 8$2,933 NZD
MOH London$4,561 NZD

42 data points across 13 retailers

14 retailers$985 NZD to $4,561 NZD

Retailer 1
-
$880 NZD
$496 USD
Price last confirmed 9 days ago
B+
Retailer 2
-
$985 NZD
$555 USD
View
Final sale: no returns
Retailer 3
-
$985 NZD
$555 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$1,091 NZD
$615 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$1,095 NZD
$617 USD
View
B
Retailer 6
-
$1,340 NZD
$755 USD
View
B
Retailer 7
-
$1,589 NZD
€853 EUR
View
B
Retailer 8
-
$1,698 NZD
$957 USD
View
B
Retailer 9
-
$1,800 NZD
£799 GBP
View
B
Retailer 10
-
$2,094 NZD
$1,180 USD
View
B
Retailer 11
-
$2,536 NZD
£1,126 GBP
View
Retailer 12
-
$2,869 NZD
$1,617 USD
View
Price last confirmed 7 days ago
C
Retailer 13
-
$2,933 NZD
$1,653 USD
View
Most Expensive
B
MOH London
LG514271363 · Oct 26
$4,561 NZD
£2,024 GBP
View
13 more retailers have this diamond
Prices start from $985 NZDSave up to $3,576 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.

B+
1.55ct Radiant
$985 NZD