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Oval|Natural|GIA

1.21ct D SI1 Oval Natural Diamond

VG • D/SI1 • GIA 1525373512

Certificate GIA 1525373512

Diamond specifications and retailer prices

From $8,242 NZD
As of November 6, 2026
Save $10,118 NZD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $18,360 NZD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1525373512. Listed at 19 retailers as of November 5, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1525373512
Dimensions8.12 × 5.86 × 3.79 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
8.12 mm5.86 mm1.21 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1525373512
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.7%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $18,360 NZD|Low: $8,173 NZD|High: $18,360 NZD|Avg: $12,090 NZD
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
November 6, 2026
Retailer 13$8,242 NZD
Retailer 6$9,792 NZD
Retailer 3$10,362 NZD
Retailer 8$10,428 NZD
Retailer 2$10,648 NZD
Retailer 5$10,908 NZD
Retailer 11$11,227 NZD
Retailer 12$11,227 NZD
Retailer 4$11,251 NZD
Retailer 7$11,294 NZD
Retailer 14$12,954 NZD
Retailer 9$13,392 NZD
Retailer 10$16,127 NZD
NZ Jewellers$18,360 NZD

41 data points across 14 retailers

19 retailers$8,242 NZD to $18,360 NZD

B+
Cheapest Retailer
-
$8,242 NZD
B
Retailer 2
-
$9,792 NZD
View
Retailer 3
-
$10,042 NZD
View
Price last confirmed 81 days ago
B
Retailer 4
-
$10,362 NZD
View
Final sale: no returns
B
Retailer 5
-
$10,428 NZD
View
B
Retailer 6
-
$10,445 NZD
View
B
Retailer 7
-
$10,648 NZD
View
Retailer 8
-
$10,908 NZD
View
Price last confirmed 33 days ago
B
Retailer 9
-
$11,227 NZD
View
B
Retailer 10
-
$11,227 NZD
View
B
Retailer 11
-
$11,251 NZD
View
B
Retailer 12
-
$11,258 NZD
View
B
Retailer 13
-
$11,294 NZD
View
Retailer 14
-
$12,665 NZD
View
Price last confirmed 66 days ago
B
Retailer 15
-
$12,954 NZD
View
B
Retailer 16
-
$13,392 NZD
View
B
Retailer 17
-
$16,127 NZD
View
B
Retailer 18
-
$18,360 NZD
View
Most Expensive
NZ Jewellers
2ec539e1-1b40-40c3-9c86-2a9cdc662e84 · Oct 17
$18,360 NZD
$10,178 USD
View
Price last confirmed 20 days ago
18 more retailers have this diamond
Prices start from $8,242 NZDSave up to $10,118 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 Oval
$8,242 NZD