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1.15ct D SI1 Round Natural Diamond

VG • D/SI1 • GIA 2151334458

Certificate GIA 2151334458

Diamond specifications and retailer prices

From $3,620 USD
As of October 30, 2026
Save $1,597 USD (31%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,217 USD 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 $3,620 to $5,217, a $1,597 spread on the same certified stone. 77 Diamonds lists it at $5,217. 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
Color
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: $5,217 USD|Low: $3,573 USD|High: $5,251 USD|Avg: $4,609 USD|+1.8%
77 Diamonds
Retailer 2
Retailer 3
October 30, 2026
Retailer 3$3,620 USD
Retailer 2$5,095 USD
77 Diamonds$5,217 USD

40 data points across 3 retailers

8 retailers$3,620 USD to $5,217 USD

B+
Cheapest Retailer
-
$3,620 USD
B+
Retailer 2
-
$3,655 USD
View
B+
Retailer 3
-
$3,802 USD
View
B+
Retailer 4
-
$3,938 USD
A$6,058 AUD
View
B+
Retailer 5
-
$4,069 USD
CA$5,652 CAD
View
B
Retailer 6
-
$4,694 USD
View
B
Retailer 7
-
$5,095 USD
€4,852 EUR
View
Most Expensive
B
77 Diamonds
RBZPECUMBXA · Oct 30
$5,217 USD
£4,108 GBP
View
7 more retailers have this diamond
Prices start from $3,620 USDSave up to $1,597 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+
1.15ct Round
$3,620 USD