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Round|Natural|GIA

1.15ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 3505185593

Certificate GIA 3505185593

Diamond specifications and retailer prices

From $5,970 AUD
SGD 5,667 SGD
As of October 31, 2026
Save $6,630 AUD (53%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $12,600 AUD 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 $5,970 to $12,600, a $6,630 spread on the same certified stone. Diamond Quarter lists it at $12,600. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $5,970 AUD|Low: $4,675 AUD|High: $9,681 AUD|Avg: $5,878 AUD|-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$4,675 AUD
Retailer 4$4,938 AUD
Retailer 9$4,997 AUD
Retailer 15$4,997 AUD
Retailer 11$5,097 AUD
Retailer 10$5,190 AUD
Retailer 13$5,204 AUD
Retailer 8$5,514 AUD
Retailer 3$5,709 AUD
Retailer 1$5,970 AUD
Retailer 2$6,267 AUD
Retailer 6$6,278 AUD
Retailer 16$6,278 AUD
Retailer 5$6,477 AUD
Retailer 14$6,759 AUD
Retailer 7$9,681 AUD

4 data points across 16 retailers

3 retailers$5,970 AUD to $12,600 AUD

Retailer 1
-
$5,097 AUD
$3,581 USD
Price last confirmed 90 days ago
B+
Retailer 2
-
$5,970 AUD
SGD 5,667 SGD
View
Most Expensive
B
Diamond Quarter
1.15SI1D3593E909N · Oct 29
$12,600 AUD
£6,969 GBP
View
2 more retailers have this diamond
Prices start from $5,970 AUDSave up to $6,630 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
$5,970 AUD