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Round|Lab Grown|GIA

1.55ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 2474519311

Certificate GIA 2474519311

Diamond specifications and retailer prices

From $473 AUD
As of November 5, 2026
Save $1,870 AUD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,343 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2474519311. Listed at 16 retailers as of October 31, 2026, with prices from $473 to $2,343, a $1,870 spread on the same certified stone. Brilliant Earth lists it at $2,343. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginLab Grown
Grading LabGIA
CertificateGIA 2474519311
Dimensions7.39 × 7.35 × 4.60 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.39 mm7.35 mm1.55 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2474519311
Side View
Table 57.0%Crown 35°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.5%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $2,343 AUD|Low: $461 AUD|High: $2,420 AUD|Avg: $1,085 AUD
Brilliant Earth
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 3$473 AUD
Retailer 8$539 AUD
Retailer 14$549 AUD
Retailer 15$586 AUD
Retailer 6$593 AUD
Retailer 4$789 AUD
Retailer 13$807 AUD
Retailer 16$821 AUD
Retailer 2$909 AUD
Retailer 11$939 AUD
Retailer 5$1,010 AUD
Retailer 7$1,069 AUD
Retailer 9$1,718 AUD
Retailer 12$1,883 AUD
Retailer 10$2,340 AUD
Brilliant Earth$2,343 AUD

45 data points across 16 retailers

16 retailers$473 AUD to $2,343 AUD

A
Cheapest Retailer
-
$473 AUD
A
Retailer 2
-
$539 AUD
View
Final sale: no returns
A
Retailer 3
-
$549 AUD
View
A
Retailer 4
-
$586 AUD
View
Retailer 5
-
$593 AUD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$789 AUD
View
A
Retailer 7
-
$807 AUD
View
A
Retailer 8
-
$821 AUD
View
B+
Retailer 9
-
$909 AUD
View
B+
Retailer 10
-
$939 AUD
View
B+
Retailer 11
-
$1,010 AUD
View
B+
Retailer 12
-
$1,069 AUD
View
B
Retailer 13
-
$1,718 AUD
View
B
Retailer 14
-
$1,883 AUD
View
B
Retailer 15
-
$2,340 AUD
View
Most Expensive
B
Brilliant Earth
13393592A · Oct 31
$2,343 AUD
$1,640 USD
View
15 more retailers have this diamond
Prices start from $473 AUDSave up to $1,870 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.

A
1.55ct Round
$473 AUD