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Round|Natural|GIA

1.26ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2504158362

Shape and cutting style on the report: Round

Certificate GIA 2504158362

Diamond specifications and retailer prices

From $4,755 AUD
£2,630 GBP
As of October 31, 2026
7 retailers carry this diamond
Most expensive: $4,755 AUD at 77 Diamonds
View at 77 Diamonds

About this 1.26ct natural round diamond

This 1.26ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2504158362. Listed at 7 retailers as of October 31, 2026. 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

1.26
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2504158362
Dimensions6.98 × 6.93 × 4.33 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Top View
6.98 mm6.93 mm1.26 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2504158362
Side View
Table 57.0%Crown 35°Girdle: THN-MEDPavilion 41.6°Culet: NoneDepth 62.3%

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 31
Current: $4,755 AUD|Low: $2,874 AUD|High: $8,338 AUD|Avg: $4,520 AUD|+1.0%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 2$3,021 AUD
Retailer 9$3,498 AUD
Retailer 10$3,572 AUD
Retailer 3$3,681 AUD
Retailer 8$3,767 AUD
Retailer 5$3,989 AUD
Retailer 4$4,661 AUD
77 Diamonds$4,755 AUD
Retailer 6$7,071 AUD
Retailer 7$8,338 AUD

44 data points across 10 retailers

7 retailers

Retailer 1
-
$3,498 AUD
$2,457 USD
Price last confirmed 18 days ago
Retailer 2
-
$3,644 AUD
$2,560 USD
View
Price last confirmed 23 days ago
Retailer 3
-
$3,989 AUD
$2,802 USD
View
Price last confirmed 39 days ago
Retailer 4
-
$3,989 AUD
$2,802 USD
View
Price last confirmed 36 days ago
Retailer 5
-
$4,190 AUD
$2,943 USD
View
Price last confirmed 17 days ago
Retailer 6
-
$4,602 AUD
$3,233 USD
View
Price last confirmed 39 days ago
Most Expensive
B+
77 Diamonds
RBCPSS2ZBMQW · Oct 31
$4,755 AUD
£2,630 GBP
View
6 more retailers have this diamond

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+
1.26ct Round
$4,755 AUD