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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 $912 AUD
£504 GBP
As of October 30, 2026
Save $1,368 AUD (60%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,280 AUD 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 $912 to $2,280, a $1,368 spread on the same certified stone. MOH London lists it at $2,280. 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
Colour
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,280 AUD|Low: $910 AUD|High: $2,890 AUD|Avg: $1,845 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 2$912 AUD
Retailer 5$917 AUD
Retailer 3$934 AUD
Retailer 4$1,034 AUD
MOH London$2,280 AUD
Retailer 7$2,748 AUD
Retailer 6$2,890 AUD
Retailer 8$2,890 AUD

3 data points across 8 retailers

5 retailers$912 AUD to $2,280 AUD

B+
Cheapest Retailer
-
$912 AUD
£504 GBP
B+
Retailer 2
-
$917 AUD
$644 USD
View
B+
Retailer 3
-
$934 AUD
$656 USD
View
B+
Retailer 4
-
$1,034 AUD
$726 USD
View
Most Expensive
B
MOH London
3455059690 · Oct 29
$2,280 AUD
£1,261 GBP
View
4 more retailers have this diamond
Prices start from $912 AUDSave up to $1,368 AUD

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
$912 AUD