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Round|Natural|GIA

1.21ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2166080674

Certificate GIA 2166080674

Diamond specifications and retailer prices

From $11,710 NZD
$6,600 USD
As of October 25, 2026
Save $4,587 NZD (28%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $26,201 NZD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2166080674. Listed at 9 retailers as of October 25, 2026, with a 39% 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

1.21
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2166080674
Dimensions6.85 × 6.82 × 4.23 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.85 mm6.82 mm1.21 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2166080674
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.9%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: $16,298 NZD|Low: $11,710 NZD|High: $16,298 NZD|Avg: $14,068 NZD|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 29, 2026
Retailer 2$11,710 NZD
Retailer 3$12,956 NZD
Retailer 4$15,548 NZD
Retailer 1$16,298 NZD

25 data points across 4 retailers

9 retailers$11,710 NZD to $16,298 NZD

B
Cheapest Retailer
-
$11,710 NZD
$6,600 USD
B
Retailer 2
-
$11,861 NZD
$6,685 USD
View
B
Retailer 3
-
$12,956 NZD
CA$10,142 CAD
View
B
Retailer 4
-
$15,548 NZD
$8,763 USD
View
B
Retailer 5
-
$15,614 NZD
$8,800 USD
View
B
Retailer 6
-
$15,614 NZD
$8,800 USD
View
B
Retailer 7
-
$16,128 NZD
$9,090 USD
View
B
Retailer 8
-
$16,298 NZD
€8,748 EUR
View
Most Expensive
Diamond Quarter
1.21SI2E2174BEA0N · Oct 29
$26,201 NZD
£11,628 GBP
View
Price under review
8 more retailers have this diamond
Prices start from $11,710 NZDSave up to $4,587 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.

B
1.21ct Round
$11,710 NZD