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Radiant|Natural|GIA

1.53ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 1509737150

Certificate GIA 1509737150

Diamond specifications and retailer prices

From $8,738 NZD
$4,844 USD
As of November 5, 2026
1 retailer carries this diamond
Only listing: $8,738 NZD at Blue Nile
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Blue Nile

About this 1.53ct natural radiant diamond

This 1.53ct natural radiant sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1509737150. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.53
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1509737150
Dimensions7.56 × 5.70 × 4.18 mm
L/W Ratio1.33
Girdle conditionPolished
Top View
7.56 mm5.70 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1509737150
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCuletDepth 73.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $8,738 NZD|Low: $7,667 NZD|High: $10,418 NZD|Avg: $8,902 NZD
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 2$7,667 NZD
Blue Nile$8,738 NZD
Retailer 3$10,418 NZD

6 data points across 3 retailers

1 retailer

B
Blue Nile
22940481 · Nov 5
$8,738 NZD
$4,844 USD
View

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
1.53ct Radiant
$8,738 NZD