Round|Natural|GIA

1.25ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6555813150

Certificate GIA 6555813150

Diamond specifications and retailer prices

From $6,121 USD
As of November 4, 2026
Save $5,617 USD (48%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $11,738 USD at NZ Jewellers · As of November 5, 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 November 4, 2026, with prices from $6,121 to $11,738, a $5,617 spread on the same certified stone. NZ Jewellers lists it at $11,738. 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
Color
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: Nov 4
Current: $6,554 USD|Low: $5,761 USD|High: $10,213 USD|Avg: $7,179 USD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$5,761 USD
Retailer 4$6,121 USD
Retailer 5$6,478 USD
Retailer 1$6,554 USD
Retailer 2$7,619 USD
Retailer 3$10,064 USD

37 data points across 6 retailers

9 retailers$6,121 USD to $11,738 USD

B+
Cheapest Retailer
-
$6,121 USD
Retailer 2
-
$6,478 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$6,554 USD
View
B+
Retailer 4
-
$7,018 USD
View
B
Retailer 5
-
$7,126 USD
View
B
Retailer 6
-
$7,619 USD
View
B
Retailer 7
-
$8,098 USD
View
B
Retailer 8
-
$10,064 USD
View
Most Expensive
B
NZ Jewellers
0b0fd54a-56a9-45de-b4bd-79a0249ff3cb · Nov 5
$11,738 USD
View
8 more retailers have this diamond
Prices start from $6,121 USDSave up to $5,617 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.

B+
1.25ct Round
$6,121 USD