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Oval|Natural|GIA

1.20ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 6551103221

Certificate GIA 6551103221

Diamond specifications and retailer prices

From $2,030 AUD
As of November 6, 2026
Save $2,682 AUD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,970 AUD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551103221. Listed at 15 retailers as of November 4, 2026, with a 132% 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551103221
Dimensions8.31 × 5.92 × 3.72 mm
L/W Ratio1.40
Top View
8.31 mm5.92 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551103221
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.9%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $4,194 AUD|Low: $2,030 AUD|High: $4,940 AUD|Avg: $3,147 AUD|-3.2%
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
November 6, 2026
Retailer 4$2,030 AUD
Retailer 2$2,490 AUD
Retailer 3$2,589 AUD
Retailer 7$2,617 AUD
Retailer 13$2,773 AUD
Retailer 8$2,825 AUD
Retailer 11$2,930 AUD
Retailer 10$2,934 AUD
Retailer 6$2,938 AUD
Retailer 5$3,158 AUD
Retailer 9$3,292 AUD
Retailer 14$3,684 AUD
Retailer 1$4,194 AUD
Retailer 12$4,713 AUD

29 data points across 14 retailers

15 retailers$2,030 AUD to $4,713 AUD

A
Cheapest Retailer
-
$2,030 AUD
A
Retailer 2
-
$2,490 AUD
View
Final sale: no returns
A
Retailer 3
-
$2,589 AUD
View
A
Retailer 4
-
$2,617 AUD
View
A
Retailer 5
-
$2,773 AUD
View
A
Retailer 6
-
$2,825 AUD
View
B+
Retailer 7
-
$2,930 AUD
View
B+
Retailer 8
-
$2,934 AUD
View
B+
Retailer 9
-
$2,938 AUD
View
B+
Retailer 10
-
$3,158 AUD
View
B+
Retailer 11
-
$3,292 AUD
View
B+
Retailer 12
-
$3,684 AUD
View
B+
Retailer 13
-
$4,194 AUD
View
B
Retailer 14
-
$4,713 AUD
View
Most Expensive
NZ Jewellers
a0e7a31b-df52-40ef-b720-e40980b53606 · Sep 26
$6,970 AUD
$4,789 USD
View
Price last confirmed 41 days ago
14 more retailers have this diamond
Prices start from $2,030 AUDSave up to $2,682 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 Oval
$2,030 AUD