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Round|Natural|GIA

1.55ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 7531110751

Certificate GIA 7531110751

Diamond specifications and retailer prices

From $7,148 AUD
As of October 31, 2026
Save $2,318 AUD (24%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $9,466 AUD at Yorxs · As of October 30, 2026
View at Yorxs

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7531110751. Listed at 4 retailers as of October 30, 2026, with prices from $7,148 to $9,466, a $2,318 spread on the same certified stone. Yorxs lists it at $9,466. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7531110751
Dimensions7.53 × 7.55 × 4.46 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
7.53 mm7.55 mm1.55 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7531110751
Side View
Table 61.0%Crown 33°GirdlePavilion 40.8°Culet: NoneDepth 59.1%

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: Oct 31
Current: $8,998 AUD|Low: $7,148 AUD|High: $9,556 AUD|Avg: $8,826 AUD|-3.5%
Retailer 1
Retailer 2
Retailer 3
Yorxs
November 1, 2026
Retailer 2$7,148 AUD
Retailer 3$7,729 AUD
Retailer 1$8,998 AUD
Yorxs$9,466 AUD

38 data points across 4 retailers

4 retailers$7,148 AUD to $9,466 AUD

A
Cheapest Retailer
-
$7,148 AUD
B+
Retailer 2
-
$7,729 AUD
CA$7,540 CAD
View
B+
Retailer 3
-
$8,998 AUD
£4,977 GBP
View
Most Expensive
B+
Yorxs
D48929-11 · Oct 30
$9,466 AUD
€6,333 EUR
View
3 more retailers have this diamond
Prices start from $7,148 AUDSave up to $2,318 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
$7,148 AUD