Round|Natural|GIA

1.20ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2527585822

Certificate GIA 2527585822

Diamond specifications and retailer prices

From $4,876 AUD
$3,425 USD
As of October 25, 2026
Save $5,059 AUD (51%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $10,866 AUD at NZ Jewellers · As of September 28, 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 2527585822. Listed at 21 retailers as of October 25, 2026, with a 104% 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
FluorescenceMedium
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2527585822
Dimensions6.82 × 6.80 × 4.22 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.82 mm6.80 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2527585822
Side View
Table 58.0%Crown 34.5°Girdle: Sli. ThickPavilion 41.4°Culet: NoneDepth 62.1%

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 25
Current: $6,002 AUD|Low: $4,346 AUD|High: $10,054 AUD|Avg: $6,746 AUD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7$4,876 AUD
Retailer 4$5,173 AUD
Retailer 8$5,216 AUD
Retailer 1$6,002 AUD
Retailer 3$6,341 AUD
Retailer 6$6,647 AUD
Retailer 9$6,653 AUD
Retailer 5$7,667 AUD
Retailer 2$9,935 AUD

42 data points across 9 retailers

21 retailers$4,876 AUD to $9,935 AUD

A
Cheapest Retailer
-
$4,876 AUD
$3,425 USD
A
Retailer 2
-
$4,973 AUD
$3,493 USD
View
A
Retailer 3
-
$5,173 AUD
View
A
Retailer 4
-
$5,216 AUD
$3,664 USD
View
Final sale: no returns
B+
Retailer 5
-
$5,388 AUD
$3,785 USD
View
B+
Retailer 6
-
$5,552 AUD
$3,900 USD
View
Retailer 7
-
$5,650 AUD
$3,969 USD
View
Price last confirmed 30 days ago
Retailer 8
-
$5,650 AUD
$3,969 USD
View
Price last confirmed 32 days ago
B+
Retailer 9
-
$6,002 AUD
£3,319 GBP
View
B+
Retailer 10
-
$6,341 AUD
£3,507 GBP
View
B+
Retailer 11
-
$6,378 AUD
$4,480 USD
View
B+
Retailer 12
-
$6,378 AUD
$4,480 USD
View
Retailer 13
-
$6,520 AUD
$4,580 USD
View
Price last confirmed 32 days ago
B+
Retailer 14
-
$6,569 AUD
$4,614 USD
View
B+
Retailer 15
-
$6,591 AUD
$4,630 USD
View
B+
Retailer 16
-
$6,647 AUD
€4,447 EUR
View
Retailer 17
-
$6,653 AUD
View
Price last confirmed 22 days ago
Retailer 18
-
$7,055 AUD
$4,956 USD
View
Price last confirmed 9 days ago
B+
Retailer 19
-
$7,667 AUD
ZAR 87,004 ZAR
View
B
Retailer 20
-
$9,935 AUD
£5,495 GBP
View
Most Expensive
NZ Jewellers
edb8209f-f13d-4790-8314-98fb76eb4070 · Sep 28
$10,866 AUD
$7,633 USD
View
Price last confirmed 34 days ago
20 more retailers have this diamond
Prices start from $4,876 AUDSave up to $5,059 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
$4,876 AUD