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Round|Natural|GIA

1.20ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 5566280989

Certificate GIA 5566280989

Diamond specifications and retailer prices

From $2,278 USD
HK$17,800 HKD
As of October 29, 2026
Save $2,859 USD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,323 USD at NZ Jewellers · As of October 17, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5566280989. Listed at 19 retailers as of October 29, 2026, with a 125% 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
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5566280989
Dimensions6.76 × 6.73 × 4.27 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Natural
Top View
6.76 mm6.73 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5566280989
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.3%

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 29
Current: $3,163 USD|Low: $2,278 USD|High: $5,171 USD|Avg: $3,170 USD|+0.5%
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
October 29, 2026
Retailer 5$2,278 USD
Retailer 6$2,429 USD
Retailer 11$2,669 USD
Retailer 12$2,820 USD
Retailer 9$2,975 USD
Retailer 4$2,975 USD
Retailer 3$3,055 USD
Retailer 13$3,055 USD
Retailer 1$3,163 USD
Retailer 2$3,264 USD
Retailer 8$3,572 USD
Retailer 10$3,720 USD
Retailer 7$5,137 USD

33 data points across 13 retailers

19 retailers$2,278 USD to $5,137 USD

A
Cheapest Retailer
-
$2,278 USD
HK$17,800 HKD
A
Retailer 2
-
$2,429 USD
₹231,309 INR
View
A
Retailer 3
-
$2,669 USD
SGD 3,607 SGD
View
A
Retailer 4
-
$2,742 USD
View
A
Retailer 5
-
$2,820 USD
View
Final sale: no returns
A
Retailer 6
-
$2,850 USD
View
A
Retailer 7
-
$2,975 USD
View
A
Retailer 8
-
$2,975 USD
£2,343 GBP
View
Price last confirmed 29 days ago
A
Retailer 9
-
$3,055 USD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$3,055 USD
View
Price last confirmed 13 days ago
A
Retailer 11
-
$3,163 USD
£2,491 GBP
View
B+
Retailer 12
-
$3,173 USD
View
Price last confirmed 14 days ago
B+
Retailer 13
-
$3,201 USD
SGD 4,326 SGD
View
B+
Retailer 14
-
$3,264 USD
A$5,022 AUD
View
Price last confirmed 21 days ago
B+
Retailer 15
-
$3,525 USD
View
Price last confirmed 10 days ago
B+
Retailer 16
-
$3,572 USD
€3,402 EUR
View
B+
Retailer 17
-
$3,720 USD
ZAR 60,102 ZAR
View
B
Retailer 18
-
$5,137 USD
£4,045 GBP
View
Most Expensive
B
NZ Jewellers
cc253d74-bfa1-436e-a15f-ccc07b422e88 · Oct 17
$5,323 USD
View
Price last confirmed 12 days ago
18 more retailers have this diamond
Prices start from $2,278 USDSave up to $2,859 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
$2,278 USD