Round|Natural|GIA

1.15ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 3505185593

Certificate GIA 3505185593

Diamond specifications and retailer prices

From $4,194 USD
SGD 5,667 SGD
As of October 29, 2026
Save $4,657 USD (53%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $8,851 USD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

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 top-tier cut grade and certified by GIA 3505185593. Listed at 3 retailers as of October 29, 2026, with prices from $4,194 to $8,851, a $4,657 spread on the same certified stone. Diamond Quarter lists it at $8,851. 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

1.15
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 3505185593
Dimensions6.68 × 6.65 × 4.15 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.68 mm6.65 mm1.15 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3505185593
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.4%

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 29
Current: $4,194 USD|Low: $3,284 USD|High: $6,801 USD|Avg: $4,129 USD|-0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 13, 2026
Retailer 12$3,284 USD
Retailer 4$3,469 USD
Retailer 9$3,510 USD
Retailer 15$3,510 USD
Retailer 11$3,581 USD
Retailer 10$3,646 USD
Retailer 13$3,655 USD
Retailer 8$3,873 USD
Retailer 3$4,010 USD
Retailer 1$4,194 USD
Retailer 2$4,402 USD
Retailer 6$4,410 USD
Retailer 16$4,410 USD
Retailer 5$4,550 USD
Retailer 14$4,748 USD
Retailer 7$6,801 USD

4 data points across 16 retailers

3 retailers$4,194 USD to $8,851 USD

Retailer 1
-
$3,581 USD
Price last confirmed 88 days ago
B+
Retailer 2
-
$4,194 USD
SGD 5,667 SGD
View
Most Expensive
B
Diamond Quarter
1.15SI1D3593E909N · Oct 29
$8,851 USD
£6,969 GBP
View
2 more retailers have this diamond
Prices start from $4,194 USDSave up to $4,657 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
$4,194 USD