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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 £3,130 GBP
SGD 5,667 SGD
As of October 31, 2026
Save £3,476 GBP (53%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £6,606 GBP 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 £3,130 to £6,606, a £3,476 spread on the same certified stone. Diamond Quarter lists it at £6,606. 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: £3,130 GBP|Low: £2,451 GBP|High: £5,076 GBP|Avg: £3,082 GBP|-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£2,451 GBP
Retailer 4£2,589 GBP
Retailer 9£2,620 GBP
Retailer 15£2,620 GBP
Retailer 11£2,672 GBP
Retailer 10£2,721 GBP
Retailer 13£2,728 GBP
Retailer 8£2,891 GBP
Retailer 3£2,993 GBP
Retailer 1£3,130 GBP
Retailer 2£3,285 GBP
Retailer 6£3,291 GBP
Retailer 16£3,291 GBP
Retailer 5£3,396 GBP
Retailer 14£3,544 GBP
Retailer 7£5,076 GBP

4 data points across 16 retailers

3 retailers£3,130 GBP to £6,606 GBP

Retailer 1
-
£2,672 GBP
$3,581 USD
Price last confirmed 89 days ago
B+
Retailer 2
-
£3,130 GBP
SGD 5,667 SGD
View
Most Expensive
B
Diamond Quarter
1.15SI1D3593E909N · Oct 29
£6,606 GBP
View
2 more retailers have this diamond
Prices start from £3,130 GBPSave up to £3,476 GBP

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
£3,130 GBP