Round|Natural|GIA

1.01ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6381212727

Certificate GIA 6381212727

Diamond specifications and retailer prices

From $3,646 USD
As of November 4, 2026
Save $5,690 USD (61%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $9,336 USD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6381212727. Listed at 25 retailers as of November 4, 2026, with prices from $3,646 to $9,336, a $5,690 spread on the same certified stone. Diamond Quarter lists it at $9,336. 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

1.01
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6381212727
Dimensions6.40 × 6.37 × 3.96 mm
L/W Ratio1.00
Top View
6.40 mm6.37 mm1.01 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6381212727
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

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: Nov 4
Current: $4,655 USD|Low: $3,728 USD|High: $7,840 USD|Avg: $5,076 USD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$3,740 USD
Retailer 5$3,878 USD
Retailer 8$4,067 USD
Retailer 1$4,655 USD
Retailer 4$4,759 USD
Retailer 9$4,903 USD
Retailer 3$5,153 USD
Retailer 2$5,935 USD
Retailer 6$7,726 USD

36 data points across 9 retailers

25 retailers$3,646 USD to $9,336 USD

B+
Cheapest Retailer
-
$3,646 USD
B+
Retailer 2
-
$3,737 USD
View
B+
Retailer 3
-
$3,740 USD
View
B+
Retailer 4
-
$3,878 USD
View
B
Retailer 5
-
$4,067 USD
View
Final sale: no returns
B+
Retailer 6
-
$4,175 USD
View
B+
Retailer 7
-
$4,381 USD
View
Retailer 8
-
$4,407 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$4,407 USD
View
B+
Retailer 10
-
$4,407 USD
View
B+
Retailer 11
-
$4,655 USD
View
B+
Retailer 12
-
$4,664 USD
View
B+
Retailer 13
-
$4,759 USD
View
Retailer 14
-
$4,903 USD
View
Price last confirmed 28 days ago
B
Retailer 15
-
$4,960 USD
View
B
Retailer 16
-
$4,960 USD
View
B
Retailer 17
-
$5,085 USD
View
B
Retailer 18
-
$5,120 USD
View
B
Retailer 19
-
$5,153 USD
View
Retailer 20
-
$5,371 USD
View
Price last confirmed 14 days ago
B
Retailer 21
-
$5,935 USD
View
B
Retailer 22
-
$7,039 USD
View
B
Retailer 23
-
$7,726 USD
View
B
Retailer 24
-
$8,475 USD
View
Most Expensive
B
Diamond Quarter
1.01SI1D63278FF2N · Nov 5
$9,336 USD
£7,352 GBP
View
24 more retailers have this diamond
Prices start from $3,646 USDSave up to $5,690 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+
1.01ct Round
$3,646 USD