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Round|Natural|GIA

1.23ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6555769796

Certificate GIA 6555769796

Diamond specifications and retailer prices

From $3,262 USD
As of October 30, 2026
Save $3,139 USD (49%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,401 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555769796. Listed at 12 retailers as of October 30, 2026, with prices from $3,262 to $6,401, a $3,139 spread on the same certified stone. NZ Jewellers lists it at $6,401. 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

1.23
Carat
D
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555769796
Dimensions6.82 × 6.76 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.82 mm6.76 mm1.23 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6555769796
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°CuletDepth 62.8%

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: Oct 30
Current: $4,302 USD|Low: $3,167 USD|High: $6,335 USD|Avg: $4,123 USD|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 5$3,262 USD
Retailer 6$3,391 USD
Retailer 7$3,461 USD
Retailer 2$3,817 USD
Retailer 4$4,235 USD
Retailer 1$4,302 USD
Retailer 8$4,536 USD
Retailer 3$6,177 USD

42 data points across 8 retailers

12 retailers$3,262 USD to $6,401 USD

A
Cheapest Retailer
-
$3,262 USD
A
Retailer 2
-
$3,391 USD
View
Final sale: no returns
B+
Retailer 3
-
$3,674 USD
View
B+
Retailer 4
-
$3,674 USD
View
B+
Retailer 5
-
$3,816 USD
View
B+
Retailer 6
-
$3,817 USD
£3,005 GBP
View
B+
Retailer 7
-
$4,235 USD
£3,335 GBP
View
B+
Retailer 8
-
$4,239 USD
View
B+
Retailer 9
-
$4,302 USD
€4,097 EUR
View
Retailer 10
-
$4,398 USD
View
Price last confirmed 62 days ago
B
Retailer 11
-
$6,177 USD
£4,864 GBP
View
Most Expensive
B
NZ Jewellers
fa709ad6-558f-4b7a-98ff-660f780ca4b6 · Oct 30
$6,401 USD
View
11 more retailers have this diamond
Prices start from $3,262 USDSave up to $3,139 USD

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
1.23ct Round
$3,262 USD