Round|Natural|GIA

1.27ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6401046249

Certificate GIA 6401046249

Diamond specifications and retailer prices

From $5,170 USD
£4,071 GBP
As of October 30, 2026
Save $5,821 USD (53%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $10,991 USD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.27ct natural round diamond

This 1.27ct 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 6401046249. Listed at 6 retailers as of October 29, 2026, with prices from $5,170 to $10,991, a $5,821 spread on the same certified stone. Diamond Quarter lists it at $10,991. 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

1.27
Carat
D
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6401046249
Dimensions6.92 × 6.89 × 4.31 mm
L/W Ratio1.00
Top View
6.92 mm6.89 mm1.27 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6401046249
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.5%

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: $5,170 USD|Low: $4,200 USD|High: $8,402 USD|Avg: $5,528 USD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 4$4,200 USD
Retailer 6$4,203 USD
Retailer 1$5,170 USD
Retailer 5$5,753 USD
Retailer 3$5,892 USD
Retailer 2$8,348 USD

37 data points across 6 retailers

6 retailers$5,170 USD to $10,991 USD

Retailer 1
-
$4,200 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
$5,170 USD
£4,071 GBP
View
Retailer 3
-
$5,753 USD
View
Price last confirmed 7 days ago
B+
Retailer 4
-
$5,892 USD
€5,611 EUR
View
B
Retailer 5
-
$8,348 USD
£6,573 GBP
View
Most Expensive
B
Diamond Quarter
1.27SI2D64491E79N · Oct 29
$10,991 USD
£8,654 GBP
View
5 more retailers have this diamond
Prices start from $5,170 USDSave up to $5,821 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+
1.27ct Round
$5,170 USD