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Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7566300636

Certificate GIA 7566300636

Diamond specifications and retailer prices

From $6,693 NZD
$3,766 USD
As of November 2, 2026
Save $5,432 NZD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $12,631 NZD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.31ct natural round diamond

This 1.31ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7566300636. Listed at 14 retailers as of November 1, 2026, with a 81% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.31
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7566300636
Dimensions6.98 × 6.94 × 4.30 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Needle
Top View
6.98 mm6.94 mm1.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566300636
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.8%

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 2
Current: $6,976 NZD|Low: $6,133 NZD|High: $12,272 NZD|Avg: $7,992 NZD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 10$6,693 NZD
Retailer 8$6,923 NZD
Retailer 1$6,976 NZD
Retailer 2$7,251 NZD
Retailer 4$7,371 NZD
Retailer 3$7,500 NZD
Retailer 11$7,715 NZD
Retailer 5$8,168 NZD
Retailer 9$8,284 NZD
Retailer 7$8,912 NZD
Retailer 6$12,126 NZD

24 data points across 11 retailers

14 retailers$6,693 NZD to $12,126 NZD

A
Cheapest Retailer
-
$6,693 NZD
$3,766 USD
Final sale: no returns
A
Retailer 2
-
$6,923 NZD
$3,895 USD
View
A
Retailer 3
-
$6,976 NZD
£3,091 GBP
View
Retailer 4
-
$7,251 NZD
$4,080 USD
View
Price last confirmed 34 days ago
Retailer 5
-
$7,251 NZD
$4,080 USD
View
Price last confirmed 33 days ago
B+
Retailer 6
-
$7,371 NZD
£3,266 GBP
View
B+
Retailer 7
-
$7,500 NZD
$4,220 USD
View
Retailer 8
-
$7,715 NZD
A$6,678 AUD
View
Price last confirmed 33 days ago
B+
Retailer 9
-
$8,168 NZD
€4,377 EUR
View
B+
Retailer 10
-
$8,284 NZD
£3,670 GBP
View
Retailer 11
-
$8,366 NZD
$4,707 USD
View
Price last confirmed 33 days ago
B
Retailer 12
-
$8,912 NZD
ZAR 81,011 ZAR
View
B
Retailer 13
-
$12,126 NZD
£5,372 GBP
View
Most Expensive
NZ Jewellers
e9f5bed7-56bf-431a-bea5-66173685ab41 · Sep 26
$12,631 NZD
$7,107 USD
View
Price last confirmed 36 days ago
13 more retailers have this diamond
Prices start from $6,693 NZDSave up to $5,432 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
1.31ct Round
$6,693 NZD