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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 $8,909 NZD
A$7,725 AUD
As of November 1, 2026
Save $2,306 NZD (21%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $11,215 NZD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

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 November 1, 2026, with prices from $8,909 to $11,215, a $2,306 spread on the same certified stone. 77 Diamonds lists it at $11,215. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $11,215 NZD|Low: $8,909 NZD|High: $11,910 NZD|Avg: $10,995 NZD|-3.6%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 3$8,909 NZD
Retailer 4$9,633 NZD
Retailer 2$11,130 NZD
77 Diamonds$11,215 NZD

37 data points across 4 retailers

4 retailers$8,909 NZD to $11,215 NZD

A
Cheapest Retailer
-
$8,909 NZD
A$7,725 AUD
B+
Retailer 2
-
$9,633 NZD
CA$7,540 CAD
View
B+
Retailer 3
-
$11,130 NZD
€5,974 EUR
View
Most Expensive
B+
77 Diamonds
RBMBTFANJPBU · Nov 1
$11,215 NZD
£4,977 GBP
View
3 more retailers have this diamond
Prices start from $8,909 NZDSave up to $2,306 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.

A
1.55ct Round
$8,909 NZD