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Round|Natural|GIA

1.01ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6381212727

Certificate GIA 6381212727

Diamond specifications and retailer prices

From $4,657 SGD
As of November 6, 2026
Save $7,268 SGD (61%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $11,925 SGD 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 5, 2026, with prices from $4,657 to $11,925, a $7,268 spread on the same certified stone. Diamond Quarter lists it at $11,925. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $5,946 SGD|Low: $4,762 SGD|High: $10,014 SGD|Avg: $6,483 SGD|-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$4,777 SGD
Retailer 5$4,953 SGD
Retailer 8$5,195 SGD
Retailer 1$5,946 SGD
Retailer 4$6,079 SGD
Retailer 9$6,263 SGD
Retailer 3$6,582 SGD
Retailer 2$7,581 SGD
Retailer 6$9,868 SGD

36 data points across 9 retailers

25 retailers$4,657 SGD to $11,925 SGD

B+
Cheapest Retailer
-
$4,657 SGD
B+
Retailer 2
-
$4,773 SGD
View
B+
Retailer 3
-
$4,777 SGD
View
B+
Retailer 4
-
$4,953 SGD
View
B
Retailer 5
-
$5,195 SGD
View
Final sale: no returns
B+
Retailer 6
-
$5,333 SGD
View
B+
Retailer 7
-
$5,596 SGD
View
Retailer 8
-
$5,629 SGD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$5,629 SGD
View
B+
Retailer 10
-
$5,629 SGD
View
B+
Retailer 11
-
$5,946 SGD
View
B+
Retailer 12
-
$5,957 SGD
View
B+
Retailer 13
-
$6,079 SGD
View
Retailer 14
-
$6,263 SGD
View
Price last confirmed 28 days ago
B
Retailer 15
-
$6,335 SGD
View
B
Retailer 16
-
$6,335 SGD
View
B
Retailer 17
-
$6,495 SGD
View
B
Retailer 18
-
$6,540 SGD
View
B
Retailer 19
-
$6,582 SGD
View
Retailer 20
-
$6,860 SGD
View
Price last confirmed 14 days ago
B
Retailer 21
-
$7,581 SGD
View
B
Retailer 22
-
$8,991 SGD
View
B
Retailer 23
-
$9,868 SGD
View
B
Retailer 24
-
$10,825 SGD
View
Most Expensive
B
Diamond Quarter
1.01SI1D63278FF2N · Nov 5
$11,925 SGD
£7,352 GBP
View
24 more retailers have this diamond
Prices start from $4,657 SGDSave up to $7,268 SGD

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
$4,657 SGD