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Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2557770796

Certificate GIA 2557770796

Diamond specifications and retailer prices

From $2,406 USD
HK$18,800 HKD
As of November 1, 2026
Save $3,032 USD (56%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $5,438 USD at NZ Jewellers · As of November 2, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557770796. Listed at 24 retailers as of November 1, 2026, with prices from $2,406 to $5,438, a $3,032 spread on the same certified stone. NZ Jewellers lists it at $5,438. 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
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557770796
Dimensions6.72 × 6.75 × 4.22 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.72 mm6.75 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557770796
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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: Nov 1
Current: $5,438 USD|Low: $2,394 USD|High: $5,438 USD|Avg: $3,405 USD
NZ Jewellers
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 2, 2026
Retailer 22$2,406 USD
Retailer 2$2,426 USD
Retailer 6$2,690 USD
Retailer 8$2,708 USD
Retailer 10$2,741 USD
Retailer 5$2,795 USD
Retailer 11$2,880 USD
Retailer 20$2,924 USD
Retailer 7$3,035 USD
Retailer 4$3,121 USD
Retailer 24$3,121 USD
Retailer 13$3,215 USD
Retailer 3$3,241 USD
Retailer 23$3,264 USD
Retailer 12$3,355 USD
Retailer 19$3,540 USD
Retailer 9$3,588 USD
Retailer 14$3,601 USD
Retailer 17$3,733 USD
Retailer 21$3,836 USD
Retailer 16$4,538 USD
Retailer 15$4,665 USD
Retailer 18$5,220 USD
NZ Jewellers$5,438 USD

25 data points across 24 retailers

24 retailers$2,406 USD to $5,438 USD

A
Cheapest Retailer
-
$2,406 USD
HK$18,800 HKD
A
Retailer 2
-
$2,426 USD
₹231,062 INR
View
A
Retailer 3
-
$2,690 USD
View
A
Retailer 4
-
$2,708 USD
A$4,166 AUD
View
A
Retailer 5
-
$2,741 USD
SGD 3,704 SGD
View
A
Retailer 6
-
$2,795 USD
View
A
Retailer 7
-
$2,880 USD
View
Final sale: no returns
A
Retailer 8
-
$2,924 USD
View
B+
Retailer 9
-
$3,035 USD
View
B+
Retailer 10
-
$3,121 USD
View
B+
Retailer 11
-
$3,121 USD
View
B+
Retailer 12
-
$3,215 USD
£2,531 GBP
View
B+
Retailer 13
-
$3,241 USD
View
B+
Retailer 14
-
$3,264 USD
View
B+
Retailer 15
-
$3,355 USD
SGD 4,534 SGD
View
Retailer 16
-
$3,467 USD
A$5,334 AUD
View
Price last confirmed 29 days ago
B+
Retailer 17
-
$3,540 USD
€3,371 EUR
View
B+
Retailer 18
-
$3,588 USD
£2,825 GBP
View
B+
Retailer 19
-
$3,601 USD
View
B+
Retailer 20
-
$3,836 USD
ZAR 61,977 ZAR
View
B
Retailer 21
-
$4,538 USD
View
B
Retailer 22
-
$4,665 USD
View
B
Retailer 23
-
$5,220 USD
£4,110 GBP
View
Most Expensive
B
NZ Jewellers
2083813b-8946-41b4-958e-caac659d28fe · Nov 2
$5,438 USD
View
23 more retailers have this diamond
Prices start from $2,406 USDSave up to $3,032 USD

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
$2,406 USD