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Round|Natural|GIA

1.25ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6555813150

Certificate GIA 6555813150

Diamond specifications and retailer prices

From $8,714 AUD
$6,121 USD
As of October 30, 2026
Save $7,996 AUD (48%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $16,710 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555813150. Listed at 9 retailers as of October 30, 2026, with prices from $8,714 to $16,710, a $7,996 spread on the same certified stone. NZ Jewellers lists it at $16,710. 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

1.25
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6555813150
Dimensions6.85 × 6.88 × 4.31 mm
L/W Ratio1.00
Girdle conditionSlightly Thick
Key to symbols
Cloud, Crystal, Needle
Top View
6.85 mm6.88 mm1.25 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6555813150
Side View
Table 58.0%Crown 35°GirdlePavilion 41.4°CuletDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $9,411 AUD|Low: $8,202 AUD|High: $14,540 AUD|Avg: $10,243 AUD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 6$8,202 AUD
Retailer 4$8,714 AUD
Retailer 5$9,222 AUD
Retailer 1$9,411 AUD
Retailer 2$10,945 AUD
Retailer 3$14,442 AUD

33 data points across 6 retailers

9 retailers$8,714 AUD to $16,710 AUD

B+
Cheapest Retailer
-
$8,714 AUD
$6,121 USD
B+
Retailer 2
-
$9,222 AUD
$6,478 USD
View
B+
Retailer 3
-
$9,411 AUD
£5,205 GBP
View
B+
Retailer 4
-
$9,991 AUD
$7,018 USD
View
B
Retailer 5
-
$10,145 AUD
$7,126 USD
View
B
Retailer 6
-
$10,945 AUD
€7,322 EUR
View
B
Retailer 7
-
$11,528 AUD
$8,098 USD
View
B
Retailer 8
-
$14,442 AUD
£7,988 GBP
View
Most Expensive
B
NZ Jewellers
0b0fd54a-56a9-45de-b4bd-79a0249ff3cb · Oct 30
$16,710 AUD
$11,738 USD
View
8 more retailers have this diamond
Prices start from $8,714 AUDSave up to $7,996 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.

B+
1.25ct Round
$8,714 AUD