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Round|Natural|GIA

1.20ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6531761022

Certificate GIA 6531761022

Diamond specifications and retailer prices

From $5,048 AUD
HK$27,700 HKD
As of October 31, 2026
Save $5,733 AUD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,024 AUD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct 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 6531761022. Listed at 21 retailers as of October 29, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6531761022
Dimensions6.75 × 6.71 × 4.23 mm
L/W Ratio1.01
Top View
6.75 mm6.71 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531761022
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.9%

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: $8,276 AUD|Low: $4,993 AUD|High: $11,573 AUD|Avg: $6,959 AUD|-5.2%
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
Retailer 17
October 31, 2026
Retailer 10$5,048 AUD
Retailer 7$5,246 AUD
Retailer 5$5,367 AUD
Retailer 6$5,367 AUD
Retailer 15$5,630 AUD
Retailer 17$5,794 AUD
Retailer 12$6,498 AUD
Retailer 3$6,620 AUD
Retailer 4$6,620 AUD
Retailer 13$6,652 AUD
Retailer 16$6,848 AUD
Retailer 11$7,191 AUD
Retailer 9$7,247 AUD
Retailer 8$7,572 AUD
Retailer 2$7,830 AUD
Retailer 1$8,276 AUD
Retailer 14$10,781 AUD

24 data points across 17 retailers

21 retailers$5,048 AUD to $10,781 AUD

A
Cheapest Retailer
-
$5,048 AUD
HK$27,700 HKD
A
Retailer 2
-
$5,246 AUD
$3,685 USD
View
A
Retailer 3
-
$5,367 AUD
$3,770 USD
View
A
Retailer 4
-
$5,367 AUD
$3,770 USD
View
A
Retailer 5
-
$5,630 AUD
$3,955 USD
View
Final sale: no returns
B+
Retailer 6
-
$5,794 AUD
$4,070 USD
View
B+
Retailer 7
-
$6,498 AUD
£3,594 GBP
View
Retailer 8
-
$6,513 AUD
$4,575 USD
View
Price last confirmed 30 days ago
Retailer 9
-
$6,513 AUD
$4,575 USD
View
Price last confirmed 32 days ago
B+
Retailer 10
-
$6,620 AUD
$4,650 USD
View
B+
Retailer 11
-
$6,620 AUD
$4,650 USD
View
B+
Retailer 12
-
$6,652 AUD
£3,679 GBP
View
B+
Retailer 13
-
$6,848 AUD
$4,810 USD
View
B+
Retailer 14
-
$7,191 AUD
€4,811 EUR
View
Retailer 15
-
$7,247 AUD
View
Price last confirmed 22 days ago
Retailer 16
-
$7,515 AUD
$5,279 USD
View
Price last confirmed 32 days ago
Retailer 17
-
$7,572 AUD
$5,319 USD
View
Price last confirmed 9 days ago
B+
Retailer 18
-
$7,830 AUD
$5,500 USD
View
B+
Retailer 19
-
$8,276 AUD
ZAR 93,919 ZAR
View
B
Retailer 20
-
$10,781 AUD
£5,963 GBP
View
Most Expensive
NZ Jewellers
595b7f9b-053c-414c-b2ed-2d1751fec16f · Sep 26
$12,024 AUD
$8,446 USD
View
Price last confirmed 35 days ago
20 more retailers have this diamond
Prices start from $5,048 AUDSave up to $5,733 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
1.20ct Round
$5,048 AUD