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Round|Natural|GIA

0.75ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6511557506

Certificate GIA 6511557506

Diamond specifications and retailer prices

From £762 GBP
₹96,435 INR
As of October 29, 2026
Save £1,756 GBP (70%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,518 GBP at Diamond Quarter · As of October 26, 2026
View at Diamond Quarter

About this 0.75ct natural round diamond

This 0.75ct natural round sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6511557506. Listed at 18 retailers as of October 26, 2026, with prices from £762 to £2,518, a £1,756 spread on the same certified stone. Diamond Quarter lists it at £2,518. 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

0.75
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6511557506
Dimensions5.84 × 5.80 × 3.62 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.84 mm5.80 mm0.75 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6511557506
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £762 GBP|Low: £727 GBP|High: £1,891 GBP|Avg: £1,177 GBP|-2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 1£762 GBP
Retailer 8£941 GBP
Retailer 10£944 GBP
Retailer 6£948 GBP
Retailer 2£1,033 GBP
Retailer 4£1,152 GBP
Retailer 3£1,322 GBP
Retailer 9£1,331 GBP
Retailer 5£1,519 GBP
Retailer 7£1,878 GBP

40 data points across 10 retailers

18 retailers£762 GBP to £2,518 GBP

A
Cheapest Retailer
-
£762 GBP
₹96,435 INR
A
Retailer 2
-
£941 GBP
$1,250 USD
View
Final sale: no returns
A
Retailer 3
-
£944 GBP
$1,255 USD
View
A
Retailer 4
-
£948 GBP
$1,260 USD
View
A
Retailer 5
-
£1,020 GBP
$1,355 USD
View
A
Retailer 6
-
£1,020 GBP
$1,355 USD
View
A
Retailer 7
-
£1,033 GBP
$1,373 USD
View
A
Retailer 8
-
£1,067 GBP
$1,418 USD
View
A
Retailer 9
-
£1,103 GBP
$1,465 USD
View
A
Retailer 10
-
£1,152 GBP
View
A
Retailer 11
-
£1,177 GBP
$1,564 USD
View
B+
Retailer 12
-
£1,274 GBP
$1,692 USD
View
B+
Retailer 13
-
£1,322 GBP
€1,673 EUR
View
B+
Retailer 14
-
£1,331 GBP
A$2,721 AUD
View
Price last confirmed 23 days ago
B+
Retailer 15
-
£1,519 GBP
ZAR 32,618 ZAR
View
B+
Retailer 16
-
£1,878 GBP
View
B
Retailer 17
-
£2,488 GBP
$3,306 USD
View
Most Expensive
B
Diamond Quarter
0.75SI1D65064FBDN · Oct 26
£2,518 GBP
View
17 more retailers have this diamond
Prices start from £762 GBPSave up to £1,756 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.

A
0.75ct Round
£762 GBP