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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 $4,095 NZD
HK$18,000 HKD
As of November 1, 2026
Save $4,986 NZD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,461 NZD 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 November 1, 2026, with a 122% 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
Colour
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: Nov 1
Current: $4,296 NZD|Low: $4,095 NZD|High: $9,191 NZD|Avg: $5,705 NZD|-1.8%
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
November 2, 2026
Retailer 10$4,095 NZD
Retailer 1$4,296 NZD
Retailer 12$4,744 NZD
Retailer 13$5,012 NZD
Retailer 11$5,065 NZD
Retailer 5$5,288 NZD
Retailer 2$5,430 NZD
Retailer 4$5,430 NZD
Retailer 6$5,587 NZD
Retailer 3$5,801 NZD
Retailer 7$6,330 NZD
Retailer 9$6,674 NZD
Retailer 8$9,081 NZD

35 data points across 13 retailers

19 retailers$4,095 NZD to $9,081 NZD

A
Cheapest Retailer
-
$4,095 NZD
HK$18,000 HKD
A
Retailer 2
-
$4,296 NZD
₹230,207 INR
View
A
Retailer 3
-
$4,744 NZD
SGD 3,607 SGD
View
A
Retailer 4
-
$4,873 NZD
$2,742 USD
View
A
Retailer 5
-
$5,012 NZD
$2,820 USD
View
Final sale: no returns
A
Retailer 6
-
$5,065 NZD
$2,850 USD
View
A
Retailer 7
-
$5,065 NZD
$2,850 USD
View
Retailer 8
-
$5,288 NZD
£2,343 GBP
View
Price last confirmed 34 days ago
Retailer 9
-
$5,430 NZD
$3,055 USD
View
Price last confirmed 14 days ago
Retailer 10
-
$5,430 NZD
$3,055 USD
View
Price last confirmed 18 days ago
A
Retailer 11
-
$5,587 NZD
£2,475 GBP
View
Retailer 12
-
$5,639 NZD
$3,173 USD
View
Price last confirmed 18 days ago
B+
Retailer 13
-
$5,690 NZD
SGD 4,326 SGD
View
Retailer 14
-
$5,801 NZD
A$5,022 AUD
View
Price last confirmed 26 days ago
Retailer 15
-
$6,265 NZD
$3,525 USD
View
Price last confirmed 15 days ago
B+
Retailer 16
-
$6,330 NZD
€3,392 EUR
View
B+
Retailer 17
-
$6,674 NZD
ZAR 60,669 ZAR
View
B
Retailer 18
-
$9,081 NZD
£4,023 GBP
View
Most Expensive
NZ Jewellers
cc253d74-bfa1-436e-a15f-ccc07b422e88 · Oct 17
$9,461 NZD
$5,323 USD
View
Price last confirmed 16 days ago
18 more retailers have this diamond
Prices start from $4,095 NZDSave up to $4,986 NZD

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
$4,095 NZD