Round|Natural|GIA

1.21ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 3515861632

Certificate GIA 3515861632

Diamond specifications and retailer prices

From $7,670 NZD
As of November 5, 2026
Save $1,770 NZD (19%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $14,599 NZD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3515861632. Listed at 20 retailers as of November 5, 2026, with a relatively tight 23% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 3515861632
Dimensions6.95 × 6.92 × 4.16 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.95 mm6.92 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3515861632
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $9,440 NZD|Low: $6,680 NZD|High: $13,506 NZD|Avg: $8,601 NZD
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
Retailer 15
November 6, 2026
Retailer 15$6,680 NZD
Retailer 2$6,783 NZD
Retailer 13$6,792 NZD
Retailer 10$7,216 NZD
Retailer 7$7,558 NZD
Retailer 3$7,670 NZD
Retailer 4$7,964 NZD
Retailer 11$8,109 NZD
Retailer 9$8,278 NZD
Retailer 6$8,446 NZD
Retailer 5$8,850 NZD
Retailer 8$9,000 NZD
Retailer 1$9,440 NZD
Retailer 14$10,203 NZD
Retailer 12$13,417 NZD

36 data points across 15 retailers

20 retailers$7,670 NZD to $9,440 NZD

Retailer 1
-
$6,680 NZD
Price last confirmed 8 days ago
Retailer 2
-
$6,783 NZD
View
Price last confirmed 9 days ago
Retailer 3
-
$6,792 NZD
View
Price last confirmed 10 days ago
Retailer 4
-
$7,216 NZD
View
Price last confirmed 9 days ago
Retailer 5
-
$7,558 NZD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$7,670 NZD
View
B
Retailer 7
-
$7,964 NZD
View
Retailer 8
-
$8,109 NZD
View
Price last confirmed 9 days ago
Retailer 9
-
$8,278 NZD
View
Price last confirmed 8 days ago
Retailer 10
-
$8,379 NZD
View
Price last confirmed 20 days ago
Retailer 11
-
$8,379 NZD
View
Price last confirmed 22 days ago
Retailer 12
-
$8,379 NZD
View
Price last confirmed 23 days ago
Retailer 13
-
$8,446 NZD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$8,850 NZD
View
B
Retailer 15
-
$9,000 NZD
View
Retailer 16
-
$9,440 NZD
View
Retailer 17
-
$9,669 NZD
View
Price last confirmed 20 days ago
Retailer 18
-
$10,203 NZD
View
Price last confirmed 11 days ago
Retailer 19
-
$13,417 NZD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
cc76e0f9-6f19-4815-a1d1-7f9994dc5d3b · Oct 17
$14,599 NZD
$8,093 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from $7,670 NZDSave up to $1,770 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
$7,670 NZD