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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 $1,435 AUD
₹96,027 INR
As of October 31, 2026
Save $3,329 AUD (70%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,764 AUD at Diamond Quarter · As of October 31, 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 31, 2026, with prices from $1,435 to $4,764, a $3,329 spread on the same certified stone. Diamond Quarter lists it at $4,764. 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 31
Current: $3,535 AUD|Low: $1,375 AUD|High: $3,576 AUD|Avg: $2,271 AUD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 3$1,435 AUD
Retailer 7$1,780 AUD
Retailer 9$1,787 AUD
Retailer 6$1,794 AUD
Retailer 2$2,192 AUD
Retailer 5$2,505 AUD
Retailer 8$2,518 AUD
Retailer 4$2,881 AUD
Retailer 1$3,535 AUD

38 data points across 9 retailers

18 retailers$1,435 AUD to $4,764 AUD

A
Cheapest Retailer
-
$1,435 AUD
₹96,027 INR
A
Retailer 2
-
$1,780 AUD
$1,250 USD
View
Final sale: no returns
A
Retailer 3
-
$1,787 AUD
$1,255 USD
View
A
Retailer 4
-
$1,794 AUD
$1,260 USD
View
A
Retailer 5
-
$1,929 AUD
$1,355 USD
View
A
Retailer 6
-
$1,929 AUD
$1,355 USD
View
A
Retailer 7
-
$1,955 AUD
$1,373 USD
View
A
Retailer 8
-
$2,019 AUD
$1,418 USD
View
A
Retailer 9
-
$2,086 AUD
$1,465 USD
View
A
Retailer 10
-
$2,192 AUD
£1,213 GBP
View
A
Retailer 11
-
$2,227 AUD
$1,564 USD
View
B+
Retailer 12
-
$2,409 AUD
$1,692 USD
View
B+
Retailer 13
-
$2,505 AUD
€1,676 EUR
View
Retailer 14
-
$2,518 AUD
View
Price last confirmed 26 days ago
B+
Retailer 15
-
$2,881 AUD
ZAR 32,698 ZAR
View
B+
Retailer 16
-
$3,535 AUD
£1,955 GBP
View
B
Retailer 17
-
$4,706 AUD
$3,306 USD
View
Most Expensive
B
Diamond Quarter
0.75SI1D65064FBDN · Oct 31
$4,764 AUD
£2,635 GBP
View
17 more retailers have this diamond
Prices start from $1,435 AUDSave up to $3,329 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.

A
0.75ct Round
$1,435 AUD