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Round|Lab Grown|GIA

1.55ct D SI2 Round Lab Grown Diamond

EX • D/SI2 • GIA 3455059690

Certificate GIA 3455059690

Diamond specifications and retailer prices

From $640 USD
£504 GBP
As of October 30, 2026
Save $961 USD (60%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,601 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3455059690. Listed at 5 retailers as of October 29, 2026, with prices from $640 to $1,601, a $961 spread on the same certified stone. MOH London lists it at $1,601. 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

1.55
Carat
D
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginLab Grown
Grading LabGIA
CertificateGIA 3455059690
Dimensions7.38 × 7.40 × 4.59 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.38 mm7.40 mm1.55 ctD / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3455059690
Side View
Table 57.0%Crown 35°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.1%

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: Oct 30
Current: $1,601 USD|Low: $639 USD|High: $2,030 USD|Avg: $1,296 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2$640 USD
Retailer 5$644 USD
Retailer 3$656 USD
Retailer 4$726 USD
MOH London$1,601 USD
Retailer 7$1,930 USD
Retailer 6$2,030 USD
Retailer 8$2,030 USD

3 data points across 8 retailers

5 retailers$640 USD to $1,601 USD

B+
Cheapest Retailer
-
$640 USD
£504 GBP
B+
Retailer 2
-
$644 USD
View
B+
Retailer 3
-
$656 USD
View
B+
Retailer 4
-
$726 USD
View
Most Expensive
B
MOH London
3455059690 · Oct 29
$1,601 USD
£1,261 GBP
View
4 more retailers have this diamond
Prices start from $640 USDSave up to $961 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+
1.55ct Round
$640 USD