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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 $5,153 AUD
$3,620 USD
As of October 30, 2026
Save $2,273 AUD (31%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,427 AUD 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 $5,153 to $7,427, a $2,273 spread on the same certified stone. 77 Diamonds lists it at $7,427. 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: $7,427 AUD|Low: $5,087 AUD|High: $7,475 AUD|Avg: $6,564 AUD|+1.8%
77 Diamonds
Retailer 2
Retailer 3
October 30, 2026
Retailer 3$5,153 AUD
Retailer 2$7,253 AUD
77 Diamonds$7,427 AUD

39 data points across 3 retailers

8 retailers$5,153 AUD to $7,427 AUD

B+
Cheapest Retailer
-
$5,153 AUD
$3,620 USD
B+
Retailer 2
-
$5,203 AUD
$3,655 USD
View
B+
Retailer 3
-
$5,413 AUD
$3,802 USD
View
B+
Retailer 4
-
$5,606 AUD
View
B+
Retailer 5
-
$5,793 AUD
CA$5,652 CAD
View
B
Retailer 6
-
$6,682 AUD
$4,694 USD
View
B
Retailer 7
-
$7,253 AUD
€4,852 EUR
View
Most Expensive
B
77 Diamonds
RBZPECUMBXA · Oct 30
$7,427 AUD
£4,108 GBP
View
7 more retailers have this diamond
Prices start from $5,153 AUDSave up to $2,273 AUD

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
$5,153 AUD