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Round|Natural|GIA

1.15ct D SI1 Round Natural Diamond

VG • D/SI1 • GIA 2151334458

Certificate GIA 2151334458

Diamond specifications and retailer prices

From $4,628 SGD
$3,620 USD
As of October 30, 2026
Save $2,042 SGD (31%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,669 SGD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 1.15ct natural round diamond

This 1.15ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2151334458. Listed at 8 retailers as of October 30, 2026, with prices from $4,628 to $6,669, a $2,042 spread on the same certified stone. 77 Diamonds lists it at $6,669. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.15
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryVery Good
FluorescenceMedium
Crown angle35°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2151334458
Dimensions6.74 × 6.84 × 4.12 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.74 mm6.84 mm1.15 ctD / SI1
OriginNatural
CutVery Good
PolishGood
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2151334458
Side View
Table 56.0%Crown 35°Girdle: VTN-MEDPavilion 40.6°Culet: NoneDepth 60.6%

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: Oct 30
Current: $6,669 SGD|Low: $4,568 SGD|High: $6,713 SGD|Avg: $5,892 SGD|+1.8%
77 Diamonds
Retailer 2
Retailer 3
October 30, 2026
Retailer 3$4,628 SGD
Retailer 2$6,513 SGD
77 Diamonds$6,669 SGD

40 data points across 3 retailers

8 retailers$4,628 SGD to $6,669 SGD

B+
Cheapest Retailer
-
$4,628 SGD
$3,620 USD
B+
Retailer 2
-
$4,673 SGD
$3,655 USD
View
B+
Retailer 3
-
$4,861 SGD
$3,802 USD
View
B+
Retailer 4
-
$5,034 SGD
A$6,058 AUD
View
B+
Retailer 5
-
$5,202 SGD
CA$5,652 CAD
View
B
Retailer 6
-
$6,001 SGD
$4,694 USD
View
B
Retailer 7
-
$6,513 SGD
€4,852 EUR
View
Most Expensive
B
77 Diamonds
RBZPECUMBXA · Oct 30
$6,669 SGD
£4,108 GBP
View
7 more retailers have this diamond
Prices start from $4,628 SGDSave up to $2,042 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+
1.15ct Round
$4,628 SGD